Displaying 2 results from an estimated 2 matches for "vreg1954".
2014 Aug 22
2
[LLVMdev] Help with definition of subregisters; spill, rematerialization and implicit uses
...n 08/19/14 18:58, Quentin Colombet wrote:
[...]
> It seems that you will have to debug further the *** Bad machine code: Instruction loads from dead spill slot *** before we can be of any help.
Yes, I've done some more digging. Sorry for the long mail...
I get:
Inline spilling aN40_0_7:%vreg1954 [5000r,5056r:0)[5056r,5348r:1)
0 at 5000r 1 at 5056r
At this point I have the following live ranges for vreg1954:
%vreg1954 [5000r,5056r:0)[5056r,5348r:1) 0 at 5000r 1 at 5056r
And vreg1954 is mentioned in these instructions:
5000B %vreg1954:hi16<def,read-undef> = mv_any16 32766...
2014 Aug 19
2
[LLVMdev] Help with definition of subregisters; spill, rematerialization and implicit uses
Hi Quentin,
On 08/15/14 19:01, Quentin Colombet wrote:
[...]
>> The question is: How should true subregister definitions be
>> expressed so that they do not interfere with each other? See the
>> detailed problem description below.
>
> We do have a limitation in our current liveness tracking for
> sub-register. Therefore, I am not sure that is possible.
>
>